workspace, useractions: get output in direction relative from reference
- add a function to get the output in a geometrical direction relative to a reference, e.g. left of active output
- use this order for the previous/next output in user actions for "switch to {previous/next} screen", instead of the seemingly random order of
m_outputs - add user actions for "switch to screen on {left/right/top/bottom}"
- use this function for determining the directionally adjacent output in quick tiling (simplifies the code a little and extends it to the vertical dimension)
Edited by Natalie Clarius